9 Ballet dancers and their peculiarly wedge-shaped feet
With thanks to Michelle Potter.
Judging from what I have been able to discover it appears that the number of sports, activities or occupations that significantly exercise the calf muscles is quite limited. These are: dancing, tennis, cycling, cross country skiing, soccer and sports involving running and jumping. “Calf muscles are used in every running, jumping, dancing activity as well as some kicking activities such as soccer and martial arts.” Quoted from “Coaching and Teaching Female Athletes and Dancers”, by Chris Wells, Kari Fasting, Diane Daum.
I have checked each of these activities and it appears that ballet dancing is the only one that can give the wedged shaped toes that SM is said to have had.
Previously I wasn’t very hot on the hypothesis that SM was a ballet dance, but I am now warming to the idea.